Book-fumigator.



R. OLDHAM.

BOOK FUMIGATOR.

APPLICATION FIILED JUNE 2. 1915.

' 1,169,993. Patented Feb. 1, 1916. r

2 SHEETS-SHEET L THE COLUMBIA PLANOGRAPH 50., WASHINGTON n c R. OLDHAM;

BOOK FUMIGATOR.

APPLICATION FILED JUNE 2, 1915.

1,169,993. Patented m1, 1916.

2 SHEETSSHEET 2.

I-MWMM KM @Zaih eHMomo/q THE COLUMBIA FLANOGRAPH cm, WASHINGTON, D. c

STATES m me caries.

' ROBERT OLDHAM, OF SALT LAKE CITY,.UT.AH.

BOOK-FUMIGATOR.

Tofallwhomz'tmay 00mm e Be it known that 1, ROBERT OLDHAM, a

citizen of the United States, residing at Salt Lake City, in the countyof Salt Lake and State of Utah, have invented certain new and .usefulImprovements in B 00k-Fum gators, of which the follow ng is aspeciportion of the bookfor the required period ofvtime to disinfect orfumigate the same. This object I accomplish with the device 7illustrated in the accompanying drawings joint in the leaf levers. Fig.5 is an end in which similar letters and numerals of reference' indicatelike parts throughout the several views and as described in thespecification forming a partof this application and pointed out in theappended claims.

In the drawings in which I have shown a substantial embodiment of myinvention, Figure 1 is a-view lIl perspective of my device with a booktherein. Fig. 2 isan invertedplan viewbfthe same. Fig. 3 is a view inperspective showing a detailof one of the leaf turning elements with theleaf lever shown indotted lines in one of its positions. Fig; 4 is anenlarged viewof the elevation of the leaf turning and supportingelements. 7 r r Frequently in schools and libraries it is desirable tofumigate the booksto prevent the' spread ofcontagiousi diseases. In theefforts by the healthfboards toprevent thespread of contagious diseasesmany large libraries and thousands of school books have been destroyedbecause 1t was not deemed practical to fumigate and disinfect the ooks,as each leaf with the covers must be disinfected. I have invented adevice wherea frame on which is secured the mechanical parts of mydevice but I do not wish to confinemyself to a frame .forit will beobviousthat the said mechanical partsof my device may be mounted in abox or other closed recep- Specification of Letters Patent.

1, as sheet glass may be fastened to the sides me toobserve theoperation ofthe leaf turn- Patented Feb. 1, 1916. Application filedllune 2,1915. Serial No. 3 1,772

tacle. I' prefer such a frame as is shown at ing'elements and provide anairtight recep-V tacle within which a disinfecting gas is generated. Onthe upper portion of said frame is secured the book clamp which consistsof "flat bars 2 and 3, the latter-or those shown at 3 are detachable byslipping the ends from under the catches 4. The back or cover of thebook to be treated .is held between thelsaid bars 2 and 3 by the handclamp 5 On the ends of said frame 1 is secured the track on which theleaf turning elements are raised or lowered, and consists of thevertical rods 6 and 6f spaced apart 1n pairs; between each pair of whichthe carriages A and A are operated. Each carriage consists of a sheet ofmetal 7' on which the pulley wheels 8 are mounted in suitable stub axlesor shafts, and said pulleywheels bear against and between said rods 6and 6. On each of ,said carriages a gripping lug 9 is secured extending,outwardly from the carriage to which the operatingcable or cord 12 isfastened in order that when said cable 12 is drawn endwise that saidcarriages will be moved up or down between said rods 6 and 6. Thesaid'cable is operated over the sheaves 10 which are mounted on thebottom of said frame 1, and over the sheaves 11 that'are mounted on thetop cross piece of said frame; and is moved by the crank 13 by beingwound around a drum shaft24c is carried one end of the supporting bar.17 to the other end ofwhich is se-" cured a short shaft 18. A sprocketwheel 19 and the upper end of another supporting bar 20 arejournal'ed onsaid short shaft 18, which also carries another sprocket wheel 21. Thelower end of the said supporting bar 20 is pivoted on a driving shaft22suitably mounted'in bearings at the bottom of said frame 1. Alsoanother sprocket wheel 23 is carried on said driving shaft 22. The

sprocket wheels. 15 and 19 are connected by the chain 32 and thesprocket wheels 21 and 23 are connected bythe sprocket chain 33.

which the leaf turning elements B are adjustably secured and of whichthere are four, two on each of said shafts. Each of said leaf turningelements consists of a metal cube 26 having a hole therethrough toreceive the said horizontal shafts 2% or 25 respectively, and having aset screw 27 threaded therein by which said cube is fastened on saidshaft to prevent said element from turning on the shaft or being movedunintentionally along its respective shaft. A clamping plate 28 isfastened by a set screw to one of the faces of said cube 26 to hold thefriction element or rubber 29 and the leaf lever C in relative positionon the cube 26. The leaf levers of which there are four each consists ofa rod or bar 30 having a joint therein and on its free end is mounted asmall roller 31, a detail of the joint in said levers is shown in Fig.4:. A leaf supporting member D is also mounted on said horizontal shafts2% and and consists of metal plates a. frame 4% which is carried on saidhorizontal shafts 2e and 25 and bars 45 connecting said metal plates andthe said frame 44. A set of sprocket wheels 42 and chain e3 impart therotary motion of the horizontal shaft 2% to the shaft 25. A con actweight L0 is secured in a false cover leaf ll, which weight fills thedouble purpose of supplying additional weight to the said cover leaf andof completing the electric circuit when said. contact weight comes incontact with said metal plate 35.

The assembling and operation of my device is as follows :The book tobefumigated is placed in the device by opening the book until the cover orback thereof is in a plane. Two false backs 41 are inserted between theoutside leaves of said book and the adjacent back or cover of said book,and securing the book by opening or parting the leaves near the middleand laying the back of the book face down on the said bars 2 and placingthe bars 3 on the top of said book back and fastening said bars byslipping the ends thereof under the catches 4, also by placing the endsof the hand clamp 5 between the book back and said bars 3 with theleaves so parted resting on the outer face of said plates 35. The leafturningelements are then adjusted to the desired position between theparted leaves by turning the crank 13 and thereby raising or loweringthe said carriages A and A until the friction elements 29 touch orcontact with the two contiguous leaves previously parted aboutone-fourth the width of each leaf from its front edge and with eachrubber positioned longitudinally onefourth the length of the leaves fromeach end thereof. The leaves on one side of the said parting bearingagainst the curved portion of sa1d metal plate 35 on one slde of thedevice and the leaves on the other side.

of the parting bearing against or resting on the other of said metalplates The said supporting bars 17' and 20 allow the said carriages Aand A with the connecting horizontal shafts 24 and 25 and the elementsmounted thereon to be raised or lowered without effecting the operationof theleaf turning members, and this allows me to turn the leaves of abook having narrow leaves and to then adjust said carriages verticallyand equally as well to turn the leaves of a book having wider leaves.The adjustment of the friction members by means of the clamping plate 28enables me by turning shafts 24: and 25 to apply the requisite frictionto turn a leaf as a child does with its moistened thumb, while by thesame adjustment to engage the opposite leaf with the rollers 31 on thefree end of the leaf levers 30 and push said leaf to the face or curvedside of the adjacent plate The joint in the leaf levers will allow saidlevers on one horizontal shaft topass the leaves when said levers arebeing raised and to bear against the leaves when said levers on theother horizontal shaft are being lowered. On the said horizontal bars24% and 25 is adjustably secured a U-shaped frame 44. to which isadjustably fastened the said metal plates 35 by means of the extendedbars The leaf placing member F is mounted on said frame 44; and consistsof a shaft 46 journaled in said frame and operated by means of asprocket chain 4-? connecting a sprocket wheel on said horizontal shaft24 with one on said shaft 46. In said shaft 41-6 is radially fastenedthe feather springs 41 8. four in number with the free ends thinned ortapered to resemble a feather in elasticity. and when operated as spokesthey move or turn the leaves from a depending vertical position they areapt to assume as at 5-3, in Fig. 5, to one side and in the path of theleaf lever C on that side where the said leaf lever C engages said leafand it is moved or pushed by said rollers 31 contiguous the turned andfumigated leaves to the left as shown in Fig. 5.

My device is electrically operated by power being appliedto rotate thesaid driving shaft 22 to the left or to the right as required. To changethe direction in which the leaves are turned and to make said changeautomatically and at the required time I use electricity generated by adry battery (not shown). The current from said battery is carried to theframe of the machine over the wire 50 and to the said weight 40 fastenedin the false back 4-1 by the wire 51. Then the last leaf is turned awayi from said false cover leaf 41 the metallic weight 40 which is securedin said cover leaf will by gravity fall into contact with the adjacentPlate 35 and complete the electric circuit. The completion of the saidbeen 1 turning.

circuit will turn said shaft 22 in a reverse direction to what it hasjust been turning and all of the said mechanism will be turned in theopposite direction to whatit has just The friction members will thenengage with and turn the leaves toward 7 the empty sides and continue todo so until all of the leaves are, so turned and there is anothercontact formed with the opposite metal plate 35 and metallic weight 41.

Having thus described my invention I desire to secure by Letters Patentand claim p 1. A book fumigator comprising a closed receptacle; clampsto hold the back of a book in a plane, with the leaves depending; a pairof metal plates on which said depending leaves may rest and give thebook an A-shape; friction members to engage one of the leaves resting onone of said plates and shift the free edge thereof to a verticalposition; leaf levers to engage said partially turned leaf and push itbeyond the other metal plate; means to rotate said friction members andsaid leaf levers around their respective axes; and means in saidreceptacle to disinfect said leaves during the turn ing operation.

2. A book fumigator comprisinga 'closed receptacle filled with adisinfecting gas; means to hold a book with its back in a plane, and theleaves depending; a pair of opposed metal plates on which said leavesrest to partially open the book; rotatable friction members to engage anindividual leaf resting on one of said plates and shift it to a verticalposition; and means to engage said partially turned leaf and push thefree edge thereof beyond the other metal plate. 7

3. A book fumigator comprising a closed receptacle filled with adisinfecting gas;

means to hold a book with its back in. a

plane and the leaves depending; a pair of opposed metal plates on whichsaid leaves rest to partially open the book; rotatable friction membersto engage an individual leaf resting on one of said plates and shift itto a. vertical position; and means to en gage said partially turned leafand push Copies of this patent maybe obtained for the free edge thereofbeyond the other metal plate, said means consisting of rotatable feathersprings and rotatable leaf levers.

4. A book fumigator comprising a closed receptacle within which adisinfecting gas may be generated; means to hold a book partially openin the upper part of said receptacle, said means consisting of flat barsto clamp the back of the book and a pair of opposed metal plates; meansto shift the leaves, one at a time, which rest on one of said metalplates so that they will rest on the other of said plates, said meansconsisting of friction members and leaf levers; and power driven shaftsrotatable in either direction to move said friction members and leaflevers in'order' that said leaves may be shifted to the right or to theleft.

5. A book fumigator comprising a closed receptacle within which adisinfecting gas may be generated; means to hold a book partially openinthe upper part of said receptacle, said means consisting of fiat barsto clamp the back of the book and a pair of opposed metal plates; meansto shift the leaves one at a time which rest on one of said metal platesso that they will rest on the other-of said plates, said meansconsisting of friction members and leaf levers; and power driven shaftsrotatable in either direction to move said friction members and leaflevers in order that said leaves may be shifted to the right or to theleft; and means to automatically change the direction in which saidshafts are rotated, said means consisting of a contact weight secured ina false back adjacent the back five cents each, by addressing theCommissioner of Patents-- Washington, D. G.

